https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95229
Bug ID: 95229
Summary: ice in mark_jump_label_1
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C++ code:
struct a {
unsigned long b;
unsigned long c;
};
class {
public:
a d;
} e;
struct f {
unsigned g;
unsigned h;
int i();
};
int f::i() {
e.d.b += g;
e.d.c += h;
}
compiled with recent gcc trunk and compiler flag -O3 -march=native,
I get
$ /home/dcb/gcc/results/bin/gcc -c -O3 -march=native bug609.cc
bug609.cc: In member function ‘int f::i()’:
bug609.cc:17:1: warning: no return statement in function returning non-void
[-Wreturn-type]
17 | }
| ^
during RTL pass: expand
bug609.cc:17:1: internal compiler error: Segmentation fault
0xf4bbb9 crash_signal(int)
../../trunk.git/gcc/toplev.c:328
0xd5878a mark_jump_label_1(rtx_def*, rtx_insn*, bool, bool)
../../trunk.git/gcc/jump.c:1087
0xd588b0 mark_jump_label_1(rtx_def*, rtx_insn*, bool, bool)
../../trunk.git/gcc/jump.c:1211
0xd588b0 mark_jump_label_1(rtx_def*, rtx_insn*, bool, bool)
../../trunk.git/gcc/jump.c:1211
The bug first seems to occur on today's gcc. Yesterdays seems fine:
/home/dcb/gcc/results.20200519/bin/gcc
/home/dcb/gcc/results.20200520/bin/gcc
during RTL pass: expand
...
Native is x86_64, AMD FX(tm)-8350, Piledriver, bdver2.
